How much for a small CO2 setup?

I'm looking for a simple, easy to maintain CO2 setup, doesn't have to be DIY. It is a moderatly planted 60 Gallon Tank, (look under Rocketman's tanks in members tank specs.) I am using an Eheim Canister, (low surface agitation all around,) and am getting new lights, (thinking Compact Flouresents, total 120 watts.)

So, how much would a CO2 system cost? I don't need these plants growing to out of control, so I would prefer something that isn't too powerful.

Do you think I need a CO2 system? If $150 is the cheapest I can get one for, I think it is out of the question.

Therefore, so I used the following for plant growth:

Seachem Flourish Excel - Organic CO2/
Seachem Flourish Root Tabs - Fertilizer, basically.
13 Hours of Light - Hopefully a total of 132 Watts.
Low Surface Agitation

What do you think of this? Do you need any more information?

Hey Aquatic Store, I attempted to reply to your last message but your box is full. Make sure to look at all folders when cleaning it out.